About the Study Guide

This Online Study Guide has been approved by Transport Canada strictly on the basis that it meets the requirements of the Standard for Pleasure Craft Operator Card Testing over the Internet (TP 15080E) and the Boating Safety Course and Test Syllabus (TP 14932E). This approval does not represent confirmation of authorship by the course provider. Feel free to look around, but you’ll need to register to begin progress toward getting your Pleasure Craft Operator Card

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  • Stern drives are known also as inboard/outboards (I/Os) because they combine features found on both inboard and outboard engines. Stern-drive engines are four-stroke automotive engines adapted for marine use and are mounted inside the boat.
  • A stern-drive engine is attached through the transom to a drive unit (also called an "outdrive") that is essentially the lower unit of an outboard. The engine turns a drive shaft that is attached to a propeller at the other end.
  • Steering of stern-drive boats is controlled by the outdrive, which swivels like an outboard engine to direct propeller thrust.
Stern-drive engine
Stern drives have quieter and more fuel-efficient engines.